Last year, a similar rumor hit, with Facebook as the potential buyer. At the time, the company denied the rumor, as well, saying it was "not factually accurate."

WhatsApp remains the leader in the market, but rivals like LINE are quickly joining them, including newer features and poaching customers. WhatsApp costs $0.99 for one year of service and is available on Android and iOS and Windows Phone as a cross-platform messaging service. The service processes billions of apps per day and is always a top 5 paid app in all 100 countries it is available in.